“Root of David” cont’ “And again, Isaiah says: “There shall be a root of Jesse; and He who shall rise to reign over the Gentiles, In Him the Gentiles shall hope.” (Rom 15:12)

The root of Jesse refers to Christ as the heir from the family line of Jesse, David’s father (1 Sam 16:1).
Read Mat 1:1-17. The genealogy of Jesus
“The book of the generation of Jesus Christ, the son of David, the son of Abraham.” (Mat 1:1)
“son of David.” (1) Matthew establishes that Jesus was a legal descendant of David by tracing the genealogy of Joseph, who was of the house of David. Although Jesus was conceived by the Holy Spirit, He was still formally registered as Joseph’s son and legally a son of David. (2) Luke’s genealogy (Luke 3:23-28) traces the lineage of Jesus through the males in Mary’s line (she was also from the Davidic line). Luke stresses that Jesus is the flesh and blood (i.e., offspring) of Mary and therefore one of us (cf. Rom 1:3). Thus, the Gospel writers assert both Jesus’ legal and biological right to the Messiahship.

Mat 1:1 presenting this genealogy was one of the most interesting ways that Matthew could begin a book for a Jewish audience. Because a person’s family line proved his or her standing as one of God’s chosen people, Matthew began by showing that Jesus was a descendant of Abraham, the father of all Jews, and a direct descendant of David, fulfilling Old Testament prophecies about the Messiah’s line. The facts of this ancestry were carefully preserved. This is the first of many proofs recorded by Matthew to show that Jesus is the true Messiah.
Mat 1:16 Because Mary was a virgin when she became pregnant, Matthew lists Joseph only as the husband of Mary, not the father of Jesus. Matthew’s genealogy gives Jesus’ legal (or royal) lineage through Joseph. Mary’s ancestral line is recorded in Luke 3:23-38. Both Mary and Joseph were direct descendants of David.

Mathew traced the genealogy back to Abraham, while Luke traced it back to Adam. Matthew wrote to the Jews, so Jesus was shown as a descendant of their father, Abraham. Luke wrote to the Gentiles, so he emphasised Jesus as the Saviour of all people.
(19) “Lamb” (Rev 5:6)
“Lamb” (Rev 5:6)
“And I looked, and behold, in the midst of the throne and of the four living creatures, and in the midst of the elders, stood a Lamb as though it had been slain, having seven horns and seven eyes, which are the seven Spirits of God sent out into all the earth.” (Rev 5:6)

John sees the Lamb looking “as though it had been slain;” the wounds inflicted on Jesus’ body during his trial and crucifixion could still be seen (see John 20:24-31).

Jesus was called the Lamb of God by John the Baptist (John 1:29). In the Old Testament, lambs were sacrificed to atone for sins: the Lamb of God died as the final sacrifice for all sins (see Isaiah 53:7; Hebrews 10:1-12, 18). The horns symbolize strength and power (see 1 King 22:11; Zechariah 1:18). Although Christ is a sacrificial lamb, he is in no way weak. He was killed, but now he lives in God’s strength and power. In Zechariah 4:2-10, the eyes are equated with the seven lamps and the one Spirit.